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API Limits

Type of limitMaximum limit
Header size16 KiB (16*1024 bytes)
Total request size128 KiB (128*1024 bytes)
Character count500,000 characters per month for DeepL API Free

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Maximum Upload Limits Per Document Format

File FormatDeepL API FreeDeepL API Pro
Word (.docx / .doc)10 MB
500,000 characters		30 MB
1 million characters
PowerPoint (.pptx)10 MB
500,000 characters		30 MB
1 million characters
Excel (.xlsx)10 MB
500,000 characters		30 MB
1 million characters
PDF (.pdf)10 MB
500,000 characters		30 MB
1 million characters
Text (.txt)1 MB
500,000 characters		1 MB
1 million characters
HTML (.html)5 MB
500,000 characters		5 MB
1 million characters
XLIFF (.xlf/.xliff)*10 MB
500,000 characters		10 MB
1 million characters
SRT (.srt)150 KB
500,000 characters		150 KB
1 million characters
*Please note that DeepL only supports .xliff files with the version 2.1.

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Your Usage

Retrieve usage information within the current billing period together with the corresponding account limits. Usage is returned and tracked for translated characters. Note that for text translation, characters are still counted toward billing when the source and target languages are equal. Character usage includes both text and document translations, and is measured by the source text length in Unicode code points. For example, “A”, “Δ”, “あ”, and “深” are each counted as a single character.